In a 5 quart saucepan, add the pumpkin pieces or puree, water, celery, onion, garlic, carrots, jalapeño (optional), whole red chili pepper (optional), olive oil, and orange juice. Add the thyme, paprika, oregano, fennel seed, coriander, cumin, chili powder, and salt. Cover and simmer for 25 - 30 minutes or until the vegetables are soft. Remove from the burner.